*{
    margin: 0;
    padding: 0;
}
li{
    list-style: none;
    position: relative;
}
a{
    color: black;
    text-decoration: none;
}
.header{
    width: 100vw;
    height: 60px;
    // border: 1px solid black;
    display: flex;
    // flex-wrap: nowrap;
    border-top: 1px solid #666;
    border-bottom: 1px solid #666;
    .img{
        margin-left: 200px;
        @media screen and (max-width:750px) {
            margin: 0;
        }
    }
    .header_input{
        // width: 435px;
        // height: 40px;
        display: flex;
        @media screen and (max-width:750px) {
            display: none;
        }
       input{
           display: block;
        width: 393px;
        height: 24px;
        padding: 6px 50px 6px 13px;
        margin-top: 10px;
        margin-left: 100px;
       }
       .but{
           display: block;
            width: 60px;
            height: 40px;
            margin-left: -5px;
            background-color: #00aee4;
            margin-top: 10px;
           img{
               width: 15px;
               height: 15px;
           }
       }
        
    }
    .select{
        width: 25px;
        height: 55px;
        margin-left: 200px;
        display: none;
        @media screen and (max-width:750px) {
            margin-left: 150px;
            display: block;
        }
        a{
            display: flex;
            width: 25px;
            height: 42px;
            align-items: center;
            margin-top: 10px;
            img{
                width: 25px;
                height: 25px;
            }
        }
        
    }
}
.nav{
    height: 54px;
    padding-left: 100px;
    position: sticky;
    top: 0;
    background-color: white;
    z-index: 9;
    @media screen and (max-width:750px) {
        display: none;
    }
}
.nav>ul{
    display: flex;
    list-style: none;
}
.nav>ul>li:first-child a{
    display: block;
    width: 92px;
    height: 52px;
    line-height: 52px;
    text-align: center;
    border-bottom: 2px solid #00aee4;
}
.nav>ul>li>a{
    display: block;
    width: 100px;
    height: 52px;
    line-height: 52px;
    text-align: center;
}
.nav>ul>li>.dropdown{
    position: absolute;
    top: 54px;
    transform: scale(0);
    transition: all .2s linear;
    background-color: white;
    z-index: 999;
}
.nav>ul>li>.dropdown>ul>li>a{
    display: block;
    width: 185px;
    height: 40px;
    line-height: 40px;
    font-size: 15px;
    padding-left: 15px;
}
.nav>ul>li::after{
    content: '';
    display: block;
    width: 0;
    height: 2px;
    background-color: #00aee4;
    transition: all .5s linear;
}
.nav>ul>li:hover .dropdown{
    transform: scale(1);
}
.nav>ul>li:first-child~li:hover::after{
    width: 100px;
}
.dropdown>ul>li::before{
    content: '';
    display: block;
    width: 0;
    height: 0;
    position: absolute;
    bottom: 0;
    background-color: #00aee4;
    transition: all .3s ease-out;
    z-index: -1;
}
.dropdown>ul>li:hover::before{
    width: 200px;
    height: 40px;
}
.dropdown>ul>li:hover a{
    color: white;
}
.frame{
    overflow: hidden;
    width: 1533px;
    height: 431px;
    position: relative;
    z-index: -1;
    @media screen and (max-width:750px) {
        width: 100vw;
        height: 105px;
    }
}
.frame .photo{
    display: flex;
    position: absolute;
    left: 0;
    animation: banner 8s infinite linear;
    @media screen and (max-width:750px) {
        display: flex;
        position: absolute;
        left: 0;
        animation: move 8s infinite linear;
        @keyframes move{
            0%{left: 0;}
            37.5%{left: 0;}
            50%{left: -375px;}
            87.5%{left: -375px;}
            100%{left: -750px;}
        }
    }
}
.frame .photo img{
    width: 1533px;
    height: 431px;
    @media screen and (max-width:750px) {
        width: 100vw;
        height: 105px;
    }
}
@keyframes banner{
    0%{left: 0;}
    37.5%{left: 0;}
    50%{left: -1533px;}
    87.5%{left: -1533px;}
    100%{left: -3066px;}
}
.point{
    width: 30px;
    height: 10px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    position: absolute;
    bottom: 25px;
    left: 0;
    right: 0;
}
.frame>.point a{
    display: block;
    width: 10px;
    height: 10px;
    background-color: black;
    border-radius: 50%;
    opacity: 0.3;
}
.point a:first-child{
    animation: pointer1 8s infinite linear;
}
.point a:last-child{
    animation: pointer2 8s infinite linear;
}
@keyframes pointer1{
    0%{opacity: 1;}
    50%{opacity: 1;}
    50.01%{opacity: 0.3;}
    100%{opacity: 0.3;}
}
@keyframes pointer2{
    0%{opacity: 0.3;}
    50%{opacity: 0.3;}
    50.01%{opacity: 1;}
    100%{opacity: 1;}
}
.frame>.point>a:hover{
    opacity: 1;
}
.bar1{
    width: 300px;
    text-align: center;
    margin: 50px auto 50px;
}
.advantage{
    height: 234px;
    display: flex;
    justify-content: space-evenly;
    @media screen and (max-width:750px) {
        // display: flex;
        flex-wrap: wrap;
        height: 378px;
    }
    a{
        width: 128px;
        text-align: center;
        display: block;
        
        img{
            margin-bottom: 20px;
        }
        span{
            &:hover{
                color: #00aee4;
            }
        }
    }
}
.show{
    height: 920px;
    background-color: #f2f2f2;
    overflow: hidden;
}
.bar2{
    width: 200px;
    height: 50px;
    margin: 70px auto 50px;
    text-align: center;
}
.bar2::after{
    content: '';
    display: block;
    width: 60px;
    height: 10px;
    margin: 0 auto;
    border-bottom: 2px solid #00aee4;
}
.show>ul{
    width: 610px;
    display: flex;
    margin: 0 auto 45px;
    @media screen and (max-width:750px) {
        display: flex;
    }
}
.show>ul>li>a{
    margin: 0 20px;
}
.show>ul>li>a:hover{
    color: #00aee4;
    text-decoration: line-through;
    text-decoration-color: #00aee4;
}

.product_box{
    width: 1340px;
    height: 540px;
    margin: 0 auto;
    display: flex
}
.product_box .product .up{
    width: 430px;
    height: 430px;
    margin-bottom: 10px;
    position: relative;
}
.product_box .product .up .item{
    width: 430px;
    height: 430px;
    position: absolute;
    top: 0;
    left: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 2;
    opacity: 0;
}
.product_box .product .up .item>a{
    display: block;
    width: 200px;
    height: 50px;
    text-align: center;
    line-height: 50px;
    color: #00aee4;
    background-color: white;
    border-radius: 25px;
    z-index: 3;
    position: absolute;
    box-shadow: 2px 2px 10px rgba(0, 0, 0, .4);
}
@keyframes cartoon{
    0%{transform: scale(0);};
    20%{transform: scale(0.8);
        opacity: 0.2;
    }
    40%{transform: scale(1);
        opacity: 0.4;
    }
    60%{transform: scale(1.1);
        opacity: 0.6;
    }
    80%{transform: scale(0.9);
        opacity: 0.8;
    }
    100%{transform: scale(1);
        opacity: 1;
    }
}
.product_box .product .up::before,.product_box .product .up::after{
    content: '';
    display: block;
    width: 430px;
    height: 0px;
    background-color: #00aee4;
    position: absolute;
    bottom: 0;
    transition: all .5s linear;
}
.product_box .product .up::before{
    top: 0;
}
.product_box .product:hover .up::before,.product_box .product:hover .up::after{
    height: 215px;
}
.product_box .product:hover .item{
    animation: cartoon 1s linear;
    animation-fill-mode: forwards;
}
.product_box .product .up .item a::before{
    content: '';
    width: 100%;
    height: 0px;
    border-radius: 25px;
    background-color: #00aee4;
    position: absolute;
    top: 0;
    left: 0;
    transition: all .2s linear;
    z-index: -1;
}
.product_box .product .up .item a:hover{
    color: white;
}
.product_box .product .up .item a:hover::before{
    height: 50px;
}
.product_box .product .down{
    padding: 20px 0 20px 25px;
    position: relative;
}
.product_box .product .down h3{
    margin-bottom: 14px;
}
.product_box .product .down::before,.product_box .product .down::after{
    content: '';
    display: block;
    width: 10px;
    background-color: #00aee4;
    position: absolute;
    bottom: 0;
}
.product_box .product .down::before{
    left: 0;
    height: 0;
    transition: all .5s linear;
}
.product_box .product .down::after{
    right: 0;
    height: 100px;
}
.show .product_box .product:hover .down::before{
    height: 100px;
}
.show .button{
    width: 80px;
    height: 30px;
    display: flex;
    justify-content: space-between;
    margin: 50px auto 0;
}
.show .button a{
    display: block;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background-color: white;
    text-align: center;
    line-height: 30px;
    color: #00aee4;
    box-shadow: 0 0 5px rgba(0, 0, 0, 0.5);
    transition: all 0.3s linear;
}
.show .button a:hover{
    background-color: #00aee4;
    color: white;
}
.bar3{
    width: 200px;
    height: 50px;
    margin: 50px auto 50px;
    text-align: center;
}
.bar3 h1::after{
    content: '';
    display: block;
    width: 20px;
    height: 10px;
    margin: 0 auto;
    border-bottom: 2px solid #222222;
}
.about_content{
    width: 1145px;
    height: 232px;
    background-color: #f0f0f0;
    margin: auto;
    padding-left: 25px;
    padding-top: 38px;
    position: relative;
    @media screen and (max-width:750px) {
        width: 350px;
        height: 600px;
        background-color: #f0f0f0;
        margin: auto;
        position: relative;
    }
}
.about_content img{
    width: 357px;
    height: 250px;
    position: absolute;
    right: 22px;
    top: 0;
    @media screen and (max-width:750px) {
        width: 298px;
        height: 186px;
        position: absolute;
        top: 400px;
    }
}
.about_content a{
    display: block;
    width: 99px;
    height: 36px;
    border-radius: 5px;
    border: 1px solid black;
    text-align: center;
    line-height: 36px;
    margin-top: 26px;
    @media screen and (max-width:750px) {
        margin-top: 50px;
    }
}
.about_content p{
    width: 733px;
    height: 98px;
    margin-top: 27px;
    @media screen and (max-width:750px) {
        width: 298px;
        height: 186px;
    }
}
.about_content a:hover{
    color:white;
    background-color: #00aee4;
}
.news{
    position: relative;
}
.bar4{
    width: 200px;
    height: 50px;
    margin: 50px auto 50px;
    text-align: center;
}
.icon a{
    display: inline-block;
    width: 40px;
    height: 18px;
    border: 1px solid black;
    text-align: center;
    line-height: 18px;
}
.icon a:first-child{
    margin-left: 1200px;
    border-top-left-radius: 10px;
    border-bottom-left-radius: 10px;
}
.icon a:last-child{
    margin-left: -5px;
    border-top-right-radius: 10px;
    border-bottom-right-radius: 10px;
}
.icon a:hover{
    background-color: #00aee4;
    color:white;
}
.news-box{
    height: 430px;
    margin: 60px 200px 0;
    display: flex;
    justify-content: space-between;
    @media screen and (max-width:750px) {
        margin: 0;
        overflow: scroll;
        div{
            width: 375px;
            
        }
    }
}
.news-box div{
    display: block;
    width: 275px;
    height: 430px;
    text-align: left;
    transition: all .3s linear;
}
.news-box div>img{
    width: 275px;
    height: 200px;
}
.news-box div>img+p{
    padding: 30px 20px;
    font-size: 14px;
    line-height: 20px;
}
.news-box div>p:nth-child(3){
    font-size: 14px;
    line-height: 14px;
    margin: 0 20px;
}
.news-box div>p:nth-child(3) span{
    color: #666666;
}
.news-box div>p:nth-child(3) img{
    width: 14px;
    height: 14px;
    margin: 0 10px;
}
.news-box div>p:nth-child(4){
    margin: 20px;
}
.news-box div:hover{
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.4);
    transform: translateY(-3px);
}
.footer{
    width: 100vw;
    height: 50px;
    background-color: #00aee4;
    display: flex;
    @media screen and (max-width:750px) {
        height: 148px;
        display: flex;
        flex-wrap: wrap;
    }
    .footer_nav_left{
        width: 780px;
        height: 40px;
        display: flex;
        margin-left: 200px;
        line-height: 40px;
        @media screen and (max-width:750px) {
            margin: 0px;
            display: flex;
            flex-wrap: wrap;
        }
        .nav_left{
            width: 125px;
            height: 40px;
            @media screen and (max-width:750px) {
                width: 125px;
                height: 39px;
                padding: 0px 13px;
            }
            a{
                span{
                    color: #fff;
                   
                }
            }
        }
    }
    .footer_photo{
        .nav_photo{
            margin-top: 10px;
            display: flex;
            @media screen and (max-width:750px) {
                height: 27px;
                margin-top: 60px;
                margin-left: 100px;
            }
            img{
                width: 26px;
                height: 25px;
            }
        }
    }
}
.footer_content{
    padding: 20px 15px 0px;
    text-align: center;
}